Thanks Bryan and Nic.
I pirated this one from a FineScale Modeler article from about six or seven years ago. Basically, you scrape VERY shallow grooves along rivet and panel lines with a curved-edge scalpel blade. The grooves are then sanded and smoothed to make the surface look like aluminum alloy skin that has been riveted, stressed and generally "oil-canned."
I worked from some photos in the Corsair In Action and a Watanabe cutaway on this one, drawing pencil lines along where I wanted to scrape. And since Corsairs had spot-welded skin attachments . . . voila, no rivets! Good practice for if I ever do a B-52
For rescribing, I borrow a bunch of different techniques. My favorite tool is the back edge of an X-acto No. 11 blade, but occasionally I use a carbide scriber or a needle in a pin vise. For guides, I use a 6-inch steel ruler, a steel drafting erasing shield, and Dymo label tape. Some curves I'll freehand by starting with shallow X-acto cuts followed by scribing with the back of the blade.
And if the panel line is too fiddly for my deteriorating eyesight, lol, I'll wait until after painting and finishing and just draw the line with a 0.5 mm mechanical pencil with HB lead.
Nothing I invented -- just borrowing from what I've read or seen.